<template>
  <div class="login_container">
    <div class="login_box">
    <!--头像-->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
    <!-- 登录表单区域   -->
      <el-form
          :model="loginForm"
          label-width="0px"
          class="login_form"
          :rules="loginFormRules"
          ref="loginFormRef">
        <!--用户名-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!--按钮区域-->
        <el-form-item class="btn">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      // 登录表单数据绑定对象
      loginForm: {
        username: '',
        password: ''
      },
      // 表单验证规则
      loginFormRules: {
        // 用户名是否合法
        username: [
          { required: true, message: '请输入用户名', trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur"}
        ],
        // 密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: "blur" },
          { min: 6, max: 15, message: "长度在 6 到 15 个字符", trigger: "blur"}
        ]
      }
    }
  },
  methods: {
    // 重置按钮
    resetLoginForm(){
      this.$refs.loginFormRef.resetFields()
    },
    // 登录校验
    login(){
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return;
        await this.$http.post('login', this.loginForm).then(res => {
         if (res.data.meta.status !== 200) return this.$message.error('登录失败 !')
         this.$message.success('登录成功')
          window.sessionStorage.setItem('token', res.data.data.token);

         this.$router.push('/home')
        })
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: lightblue;
  height: 100%;
  background-image: url("../assets/bg.jpeg");
  background-size: 100% 100%;
}

.login_box{
  width: 450px;
  height: 300px;
  background-color: #FFF;
  border-radius: 5px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px #eee;

  .avatar_box{
    height: 100px;
    width: 100px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #FFF;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btn{
  display: flex;
  float: right;
}
</style>